221 citations · 3.2k across the 84 of their papers we have counts for
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Spectra of V1405 Cas at the very beginning indicate a low-mass ONeMg white dwarf progenitor
Kenta Taguchi, Keiichi Maeda, Hiroyuki Maehara +9
The lowest possible mass of ONeMg white dwarfs (WDs) has not been clarified despite its importance in the formation and evolution of WDs. We tackle this issue by studying the prope…
Late-time H/He-poor circumstellar interaction in the type-Ic supernova SN 2021ocs: an exposed oxygen-magnesium layer and extreme stripping of the progenitor
H. Kuncarayakti, K. Maeda, L. Dessart +14
Supernova (SN) 2021ocs was discovered in the galaxy NGC 7828 () within the interacting system Arp 144, and subsequently classified as a normal type-Ic SN around peak b…
Progenitor mass constraints for the type Ib intermediate-luminosity SN 2015ap and the highly extinguished SN 2016bau
Amar Aryan, S. B. Pandey, WeiKang Zheng +21
Photometric and spectroscopic analyses of the intermediate-luminosity Type Ib supernova (SN) 2015ap and of the heavily reddened Type Ib SN~2016bau are discussed. Photometric proper…
Spectroscopic and Photometric Observations of Dwarf Nova Superoutbursts by the 3.8 m Telescope Seimei and the Variable Star Network
Yusuke Tampo, Keisuke Isogai, Naoto Kojiguchi +59
We present spectroscopic and photometric observations of 17 dwarf-nova superoutbursts obtained by KOOLS-IFU mounted on the 3.8 m telescope Seimei at Okayama Observatory of Kyoto Un…
A Type Ia supernova at the heart of superluminous transient SN 2006gy
Anders Jerkstrand, Keiichi Maeda, Koji Kawabata
Superluminous supernovae radiate up to 100 times more energy than normal supernovae. The origin of this energy and the nature of their stellar progenitors are poorly understood. We…
Extinction Laws toward Stellar Sources within a Dusty Circimstellar Medium and Implications for Type Ia Supernovae
T. Nagao, K. Maeda, T. Nozawa
Many astronomical objects are surrounded by dusty environments. In such dusty objects, multiple scattering processes of photons by circumstellar (CS) dust grains can effectively al…